CN103713278A - System and method for synchronization of high-frequency ground wave radar of sky wave and ground wave integrated networking - Google Patents
System and method for synchronization of high-frequency ground wave radar of sky wave and ground wave integrated networking Download PDFInfo
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- CN103713278A CN103713278A CN201410002432.6A CN201410002432A CN103713278A CN 103713278 A CN103713278 A CN 103713278A CN 201410002432 A CN201410002432 A CN 201410002432A CN 103713278 A CN103713278 A CN 103713278A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
- G01S19/25—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS
- G01S19/256—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS relating to timing, e.g. time of week, code phase, timing offset
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/0218—Very long range radars, e.g. surface wave radar, over-the-horizon or ionospheric propagation systems
- G01S2013/0227—OTH, Over-The-Horizon radar
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Electric Clocks (AREA)
Abstract
The invention discloses a system and method for synchronization of high-frequency ground wave radar of sky wave and ground wave integrated networking. The system comprises a PCI module, a two-port RAM and PCI sequential control module based on an FPGA chip, a GPS receiving module, a main control module, a synchronous control module and a system reset circuit. A standard CPCI bus interface is adopted and the CPCI has the chrematistics of being high in openness and reliability, capable of conducting hot plug and the like so that the stability of the whole radar system can be improved. Meanwhile, an FPGA synchronous control module is used for synchronously controlling generation of waveforms, so that the radar system is flexible and configurable in synchronous timing sequence. According to the characteristics of the system and method, low-cost, high-stability and high-accuracy synchronization of the high-frequency ground wave radar of sky wave and ground wave integrated networking is achieved.
Description
Technical field
The invention belongs to Radar Technology field, particularly relate to high-frequency ground wave radar synchro system and the method for the integrated networking of earthwave in a kind of day.
Background technology
High-frequency ground wave radar (HF Surface Wave Radar) is as a kind of emerging marine monitoring technology, have over the horizon, on a large scale, the advantage such as round-the-clock and low-cost, be considered to a kind of can realization and carry out the effectively high-tech means of monitoring to exclusive economic zone (EEZ), various countries (EEZ) monitoring.
But the general problem of present radar is single isolated work, and coverage is little, and obtaining information is limited, be difficult to realize the detected with high accuracy to extensive area.Existing radar network is also confined to the mutual networking of radar of the same race.
The integrated networking system for high-frequency earth wave radar of it earthwave can be realized sky wave transmitting, the working method that earthwave receives.Because sky wave singal is after ionospheric reflection, can cover very large-area region, as long as realize in longshore reception, just can obtain large-area sea situation information, be therefore a kind of instrument of fabulous detection sea situation.
The method of synchronization of current bistatic has different defects.Optical networking method of synchronization somewhat expensive, microwave relay mode cost is high, and the direct wave method of synchronization can only be extracted the time synchronization information transmitting.
Summary of the invention
In order to solve above-mentioned technical matters, the invention provides high-frequency ground wave radar synchro system and the method for the integrated networking of earthwave in a kind of day, for the high-frequency ground wave radar of the integrated networking of sky earthwave provides high precision, configurable synchronizing signal.
The technical scheme that system of the present invention adopts is: the high-frequency ground wave radar synchro system of the integrated networking of earthwave in a kind of day, is characterized in that: comprise pci interface module, the dual port RAM based on fpga chip and PCI time-sequence control module, GPS receiver module, main control module, synchronization control module and system reset circuit;
The PCI port of described pci interface module is connected with cpci bus, and LOCAL holds with the PCI time-sequence control module of described fpga chip and is connected, and by the PCI time-sequence control module based on fpga chip, drives the PCI chip of described pci interface module;
Described GPS receiver module is connected with described synchronization control module, for GPS genlocing status information is provided;
Described main control module is connected with system reset circuit with PCI time-sequence control module, GPS receiver module, synchronization control module with the described dual port RAM based on fpga chip respectively, for reading the described synchronization control module of configuration parameter, the configuration in real time of described dual port RAM storage, obtaining the status information of described GPS receiver module and realize system reset.
As preferably, what described pci interface module core parts adopted is PCI9054 bridging chip.
As preferably, what described fpga chip adopted is EP3C4 chip.
As preferably, what described main control module adopted is 51 single-chip microcomputers, and its UART can be connected with the UART of GPS by max232 chip, for obtaining the status information of GPS receiver module.
As preferably, what described synchronization control module adopted is the Cyclone II Series FPGA EP2C5 chip of altera corp.
As preferably, described GPS receiver module comprises gps antenna and GPS synchronous clock module, and the information that described GPS synchronous clock module receives the gps antenna by described is carried out exchanges data with described main control module after level transferring chip.
As preferably, what described GPS synchronous clock module core parts adopted is the LEA-6T GPS receiving chip of ublox company.
Utilize the high-frequency ground wave radar synchro system of the integrated networking of earthwave in of the present invention day to carry out day synchronous method of the high-frequency ground wave radar of the integrated networking of earthwave, it is characterized in that, comprise the following steps:
Step 1: wait for host computer parameter configuration, when host computer configuration parameter has operated, be transferred to beginning flag of main control module, main control module responds this beginning flag and reads dual port RAM module, and gives synchronization control module by the parameter reading;
Step 2: synchronization control module receives the configuration parameter transmitting, and judges system works pattern: manual debugging mode or GPS synchronous mode;
Manual debugging mode if, system detects manually and upgrades, and when having manual input, synchronization control module starts to export synchronizing signal, and this synchronizing signal is only suitable for single mode of operation of standing;
GPS synchronous mode if, system detects GPS state, after gps satellite and frequency signal all lock, synchronization module starts to export synchronizing signal, and arrive at 1PPS rising edge, synchronous sequence waveform upgrades, this synchronizing signal is applicable to day integrated networking synchronous working of an earthwave pattern.
The invention has the beneficial effects as follows:
(1) the GPS synchronization control module that system of the present invention adopts, can realize time 0.1s level synchronous, and frequency is exported per day accuracy and reached <1E-12; Gps system state can be realized real-time demonstration, and GPS pulse per second (PPS) output mode also can be set simultaneously;
(2) system of the present invention adopts the cpci bus of standard to be connected with host computer, and CPCI has high opening, high reliability, the characteristic such as hot-swappable has improved whole radar system degree of stability and reliability;
(3) the synchronous sequence waveform of system of the present invention is configurable flexibly, meet the required various synchronous sequence waveforms of radar network MIMO (Multiple-Input Multiple-Out-put) mode of operation, and synchronization accuracy is very high.
Accompanying drawing explanation
Fig. 1: be systematic schematic diagram of the present invention.
Fig. 2: be the systematic schematic diagram of the embodiment of the present invention.
Fig. 3: be the method flow diagram of the embodiment of the present invention.
Embodiment
Following through the present invention is further elaborated with embodiment by reference to the accompanying drawings.
Ask for an interview Fig. 1 and Fig. 2, the technical scheme that system of the present invention adopts is: the high-frequency ground wave radar synchro system of the integrated networking of earthwave in a kind of day, is characterized in that: comprise pci interface module, the dual port RAM based on fpga chip and PCI time-sequence control module, GPS receiver module, main control module, synchronization control module and system reset circuit, what pci interface module core parts adopted is PCI9054 bridging chip, what fpga chip adopted is EP3C4 chip, what main control module adopted is 51 single-chip microcomputers, its UART can be connected with the UART of GPS by max232 chip, for obtaining the status information of GPS receiver module, what synchronization control module adopted is the Cyclone II Series FPGA EP2C5 chip of altera corp, GPS receiver module comprises gps antenna and GPS synchronous clock module, GPS synchronous clock module is carried out exchanges data with main control module by the information receiving by gps antenna after level transferring chip, what GPS synchronous clock module core parts adopted is the LEA-6T GPS receiving chip of ublox company, the PCI port of pci interface module is connected with cpci bus, and LOCAL end is connected with the PCI time-sequence control module of fpga chip, and by the PCI time-sequence control module based on fpga chip, drives the PCI chip of pci interface module, GPS receiver module is connected with synchronization control module, for GPS genlocing status information is provided, main control module is connected with system reset circuit with PCI time-sequence control module, GPS receiver module, synchronization control module with the dual port RAM based on fpga chip respectively, for read the configuration parameter of dual port RAM storage, in real time configuration synchronization control module, obtain the status information of GPS receiver module and realize system reset.
The GPS receiver module of the present embodiment has high-precision time reference, can produce precise and stable time and frequency signal (1PPS, 10MHz) and deliver to synchronization control module, and its UART is connected with the URAT of main control module through level transferring chip.Main control module, as the MCU of synchronous device, is connected with system modules, controls whole system collaborative work.By the data that show that UART transmission comes, can real-time monitoring system state.
The major function of the PCI9054 of the present embodiment realizes the data communication between pci bus and local bus (being generally Harvard structure) exactly, and one has three kinds of data transfer modes: holotype, from pattern, dma mode.By interface control circuit, for building a hardware bridge between peripherals and PC, complete the smooth transmission of data.
The present embodiment utilizes FPGA to build the soft core of PCI sequential control and dual port RAM, and fpga chip is selected EP3C4, and this chip is connected with the LOCAL end of PCI chip, for realizing the sequential control of PCI.The dual port RAM of chip internal is easy to operate and can to realize RAM storage size controlled, and host computer and main control module all can carry out read-write operation to dual port RAM.
The GPS synchronous clock module of the present embodiment offers synchronous each required clock signal and the synchronizing information of day earthwave networking.When system works is when list is stood debugging mode, do not need to read coherent signal and the synchronizing information of GPS.When being operated in day earthwave networking model, main control module extracts the monitoring serial port agreement of GPS by serial ports, when gps satellite and frequency all locked, and system is when normally work, synchronization control module starts to read 1PPS pps pulse per second signal.Under the rising edge of pulse per second (PPS) drives, be produced as networking synchronous sequence signal and carry out synchronous update signal.
The main control module employing of the present embodiment is simple and easy to the 51 single-chip microcomputers series of using and reliability is high, and its UART can be connected with the UART of GPS by max232 chip, for obtaining GPS receiver state information, is suitable as very much the main control chip of native system.Because the state of sky earthwave radar network system works is different, each parameter of synchronizing signal often needs to adjust when real work, and this just needs synchronization control module on hardware, to realize programming, accurate parameters on software.Radar network synchronization control module adopts the Cyclone II Series FPGA EP2C5 chip of altera corp.This chip internal has 4608 LE unit, contains 26 M4K RAM and 2 PLL, and logical resource can fully meet design requirement.
Ask for an interview Fig. 3, utilize the high-frequency ground wave radar synchro system of the integrated networking of earthwave in of the present invention day to carry out day synchronous method of the high-frequency ground wave radar of the integrated networking of earthwave, comprise the following steps:
Step 1: wait for host computer parameter configuration, when host computer configuration parameter has operated, be transferred to beginning flag of main control module, main control module responds this beginning flag and reads dual port RAM module, and gives synchronization control module by the parameter reading;
Step 2: synchronization control module receives the configuration parameter transmitting, and judges system works pattern: manual debugging mode or GPS synchronous mode;
Manual debugging mode if, system detects manually and upgrades, and when having manual input, synchronization control module starts to export synchronizing signal, and this synchronizing signal is only suitable for single mode of operation of standing;
GPS synchronous mode if, system detects GPS state, after gps satellite and frequency signal all lock, synchronization module starts to export synchronizing signal, and arrive at 1PPS rising edge, synchronous sequence waveform upgrades, this synchronizing signal is applicable to day integrated networking synchronous working of an earthwave pattern.
High-frequency ground wave radar synchro system and the method for the integrated networking of earthwave in of the present invention day, its feature is:
(1) synchronous device adopts the GPS module of the outer locking of high precision, and device obtains the high-precision trigger pulse of GPS, coordinates the inner high precision clock conditioning module of FPGA, obtains the radar trigger pip of high stable.Obtain GPS state statement simultaneously and be stored in the soft core of dual port RAM and show and follow the trail of for host computer;
(2) the required synchronization parameter of synchronous device transmits by pci bus, and drives PCI chip by the PCI time-sequence control module based on FPGA;
(3) synchronous device reads the configuration parameter of the soft core storage of dual port RAM, realizes the waveform flexible configuration of synchronization control module.Comprise synchronization control module and system reset circuit that dual port RAM, the single-chip microcomputer main control module based on FPGA, the fpga chip of take are core;
(4) synchronous device produce synchronizing signal by CPCI backboard, deliver to AFE (analog front end), frequency synthesizer and digital collection plate etc.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described concrete enforcement, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (8)
1. a high-frequency ground wave radar synchro system for the integrated networking of sky earthwave, is characterized in that: comprise pci interface module, the dual port RAM based on fpga chip and PCI time-sequence control module, GPS receiver module, main control module, synchronization control module and system reset circuit;
The PCI port of described pci interface module is connected with cpci bus, and LOCAL holds with the PCI time-sequence control module of described fpga chip and is connected, and by the PCI time-sequence control module based on fpga chip, drives the PCI chip of described pci interface module;
Described GPS receiver module is connected with described synchronization control module, for GPS genlocing status information is provided;
Described main control module is connected with system reset circuit with PCI time-sequence control module, GPS receiver module, synchronization control module with the described dual port RAM based on fpga chip respectively, for reading the described synchronization control module of configuration parameter, the configuration in real time of described dual port RAM storage, obtaining the status information of described GPS receiver module and realize system reset.
2. the high-frequency ground wave radar synchro system of the integrated networking of earthwave according to claim 1 day, is characterized in that: what described pci interface module core parts adopted is PCI9054 bridging chip.
3. the high-frequency ground wave radar synchro system of the integrated networking of earthwave according to claim 1 day, is characterized in that: what described fpga chip adopted is EP3C4 chip.
4. the high-frequency ground wave radar synchro system of the integrated networking of earthwave according to claim 1 day, it is characterized in that: what described main control module adopted is 51 single-chip microcomputers, its UART can be connected with the UART of GPS by max232 chip, for obtaining the status information of GPS receiver module.
5. the high-frequency ground wave radar synchro system of the integrated networking of earthwave according to claim 1 day, is characterized in that: what described synchronization control module adopted is the Cyclone II Series FPGA EP2C5 chip of altera corp.
6. the high-frequency ground wave radar synchro system of the integrated networking of earthwave according to claim 1 day, it is characterized in that: described GPS receiver module comprises gps antenna and GPS synchronous clock module, the information that described GPS synchronous clock module receives the gps antenna by described is carried out exchanges data with described main control module after level transferring chip.
7. the high-frequency ground wave radar synchro system of the integrated networking of earthwave according to claim 6 day, is characterized in that: what described GPS synchronous clock module core parts adopted is the LEA-6T GPS receiving chip of ublox company.
8. utilize the high-frequency ground wave radar synchro system of the integrated networking of sky earthwave described in claim 1 to carry out day synchronous method of the high-frequency ground wave radar of the integrated networking of earthwave, it is characterized in that, comprise the following steps:
Step 1: wait for host computer parameter configuration, when host computer configuration parameter has operated, be transferred to beginning flag of main control module, main control module responds this beginning flag and reads dual port RAM module, and gives synchronization control module by the parameter reading;
Step 2: synchronization control module receives the configuration parameter transmitting, and judges system works pattern: manual debugging mode or GPS synchronous mode;
Manual debugging mode if, system detects manually and upgrades, and when having manual input, synchronization control module starts to export synchronizing signal, and this synchronizing signal is only suitable for single mode of operation of standing;
GPS synchronous mode if, system detects GPS state, after gps satellite and frequency signal all lock, synchronization module starts to export synchronizing signal, and arrive at 1PPS rising edge, synchronous sequence waveform upgrades, this synchronizing signal is applicable to day integrated networking synchronous working of an earthwave pattern.
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| CN111999704A (en) * | 2020-08-18 | 2020-11-27 | 中国电子科技集团公司第三十八研究所 | Vehicle-mounted radar time sequence generation system and method based on VPX bus |
| CN112882018A (en) * | 2021-01-13 | 2021-06-01 | 哈尔滨工业大学（威海） | Ocean and ionosphere integrated detection high-frequency radar system and control method thereof |
| CN113009477A (en) * | 2021-02-24 | 2021-06-22 | 湖北中南鹏力海洋探测系统工程有限公司 | Array type high-frequency ground wave ocean radar system |
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Application publication date: 20140409 |